(N-Phosphonacetyl-L-aspartato)(1,2-diaminocyclchexane)platinum(II) or alkali metal salt

Abstract

In binary treatment with cis-dichlorodiamine-platinum(II) (or cisplatin) the preferred ratio of the present compound to cisplatin is about 10:1 with a range of about 10:1 to 1:10 in mg/kg of body weight. As to the variations in the formula on the left hand side of the formula, it may be varied as monodentate, such as cisplatin containing a single amine group proceeding from the ring, or bidentate, such as the present compound. The saturated cyclo ring may be C.sub.4 or C.sub.5 -C.sub.7 in addition to the present cyclohexane. The present platinum compound may be prepared by reacting the known L-aspartic acid, N-(phosphonacetyl-) disodium salt (PALA; NSC-224131), with dinitrato(1,2-diaminocyclohexane)platinum(II) (NSC-239851). This compound N-phosphonacetyl-L-aspartato(1,2-diaminocyclohexane)platinum(II) may be combined in multiple drug regimen with substantially improved yield cures over the parent compounds. For example, the compound denoted Pt-268 may be combined in a dual regimen with cyclophosphamide (CY), hydroxyurea (HU), and cisplatin.

Dependencies are inferred from the claim text.